Generac iQ5200 vs WEN DF451i
What is the difference?
The Generac iQ5200 has 3.9 kW of running power, 5.2 kW peak. The WEN DF451i has 3.5 kW of running power, 4.5 kW peak.
Both are dual-fuel.
The Generac iQ5200 runs 9 h at half load, the WEN DF451i runs 8.5 h at half load. The Generac iQ5200 runs longer on a tank.
The Generac iQ5200 has a 3.2 gal tank, the WEN DF451i has a 2.2 gal tank.
Specs side by side
| Generac iQ5200 | WEN DF451i | |
|---|---|---|
| Running W | 3900 | 3500 |
| Peak W | 5200 | 4500 |
| Fuel | dual-fuel | dual-fuel |
| Tank (gal) | 3.2 | 2.2 |
| Run time @50 % (h) | 9 | 8.5 |
| Noise (dB) | — | 58 |
| CO shutoff | yes | — |
| Weight (lb) | 111 | — |
| Warranty (yr) | — | 3 |
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Specs as read from manufacturer pages on 2026-10-25 / 2026-10-27. Specs one maker does not list are left out of the comparison. Sponsored links; we may earn a commission.
Common questions
Which has more running watts, Generac iQ5200 or WEN DF451i?
The Generac iQ5200. More running watts: 3900 W vs 3500 W.
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